Hirsig No. 4
Hirsig No. 4 is an earth dam located in Laramie County, Wyoming, built in 1974. It carries a Low hazard potential classification and has a poor condition assessment.
About Hirsig No. 4
The primary purpose of Hirsig No. 4 is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by True Ranches Llc (private). It impounds the North Bear Creek near Hawk Springs.
The dam stands 32 feet tall and stretches 520 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 58 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1974, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/30/2024.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Wyoming |
| County | Laramie |
| Nearest City | Hawk Springs |
| River/Stream | North Bear Creek |
| Coordinates | 41.58500, -105.01300 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 27 ft |
| Dam Length | 520 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 58 acre-ft |
| Max Storage | 58 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,247 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | TRUE RANCHES LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/30/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01319 |
| Federal ID | WY01319 |
| More Info | State Dam Safety Program |